1.

Question

(03.05 LC)

The number that represents a neutral pH is
. (2 points)
2.
(03.05 LC)

Match the term with its description. (4 points)
1.
Acid
2.
pH
3.
Base
4.
Ions
a.
A compound that increases hydrogen ions (H+) when it is dissolved in a solution
b.
A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution
c.
An atom or molecule that has a positive or negative charge
d.
A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water
3.
(03.05 MC)

Which description is not a property of an acid? (2 points)

Turns litmus paper red

Bitter taste

Corrosive

Dissolves metals
4.
(03.05 MC)

Which description is not a property of a base? (2 points)

pH lower than 7

Turns litmus paper blue

Bitter taste

Slimy feel
5.
(03.05 MC)

Which item is made from a basic ingredient? (2 points)

Soda

Wine

Leafy vegetables

Toothpaste
6.
(03.05 MC)

Which substances will make a salt when combined? (2 points)

Vinegar and soda

Soda and wine

Detergent and ammonia

Fertilizer and vinegar
7.
(03.05 MC)

Which description of salt is a chemical property? (2 points)

No combustion

Odorless

Salty taste

Solid does not conduct electricity
8.
(03.05 MC)

Complete the sentence. When an acid is added to water, hydrogen ions __________. (2 points)

increase

decrease

stay the same

disappear
9.
(03.05 MC)

Complete the sentence. The lower the hydrogen ion concentration, the ______ the pH. (2 points)

higher

lower

closer to 7

closer to 0

Answer 1

1. The number that represents a neutral pH is 7.

2. Match the term with its description:

   1. Acid - a. A compound that increases hydrogen ions (H+) when it is dissolved in a solution
   2. pH - d. A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water
   3. Base - b. A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution
   4. Ions - c. An atom or molecule that has a positive or negative charge

3. Which description is not a property of an acid? Bitter taste

4. Which description is not a property of a base? pH lower than 7

5. Which item is made from a basic ingredient? Toothpaste

6. Which substances will make a salt when combined? Detergent and ammonia (this is typically a base, while vinegar is an acid; however, common combinations that result in salt formation involve an acid and a base)

7. Which description of salt is a chemical property? No combustion

8. Complete the sentence. When an acid is added to water, hydrogen ions increase.

9. Complete the sentence. The lower the hydrogen ion concentration, the higher the pH.